This DIY project takes an unused tobacco tin with a handful of parts and turns it into battery powered, rechargeable, 1v to 37v adjustable power supply. The center of the project is an XL6009 Buck/Boost converter. By swapping out the 10K trimmer pot on the board with a full-size Helipot and precision adjusting knob it’s possible to dial in the precise voltage needed. The LED displays both voltage in red and amperage in blue. The various outputs include a full sized USB, 2.1mm, and banana jacks. The project case was wrapped in Carbon Fiber Vinyl to give the power supply a much more modern look.
XL6009 Buck/Boost Converter https://www.aliexpress.com/item/XL600… $1.60
10K Precision Pot with fine adjustment locking knob https://www.aliexpress.com/item/1Pc-1… $2.46
Deja Vu Tobacco tin, Electronics Goldmine $2.49 http://www.goldmine-elec-products.com/prodinfo.asp?number=G20664
DPDT Toggle switch https://www.amazon.com/gp/product/B00… $0.69
USB A Panel mount jack https://www.amazon.com/gp/product/B00… $5.95
2.1mm Power Jacks https://www.aliexpress.com/item/UXCEL… $0.32
2 Series 18650 charging and protection module https://www.aliexpress.com/item/2S-8-… $1.39
18650 Battery Holder https://www.aliexpress.com/item/5-Pcs… $0.29
Digital Volt / AMp meter, 100 volts 10 amps https://www.aliexpress.com/item/High-… $1.90
18650 Battery 3000ma https://www.amazon.com/gp/product/B01… $4.20
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